@jimp/plugin-threshold
Advanced tools
Package description
@jimp/plugin-threshold is a plugin for the Jimp image processing library that allows you to apply threshold effects to images. This effect converts an image to black and white based on a threshold value, which can be useful for various image processing tasks such as edge detection, binarization, and more.
Apply Threshold Effect
This feature allows you to apply a threshold effect to an image. The `max` parameter specifies the threshold value. Pixels with a value above this threshold will be set to white, and those below will be set to black.
const Jimp = require('jimp');
Jimp.read('path/to/image.jpg')
.then(image => {
image.threshold({ max: 128 })
.write('path/to/output.jpg');
})
.catch(err => {
console.error(err);
});Sharp is a high-performance image processing library that supports a wide range of image transformations, including thresholding. It is known for its speed and efficiency, especially with large images.
GraphicsMagick (gm) is a powerful image processing library that provides a wide range of image manipulation features, including thresholding. It is a wrapper around the GraphicsMagick command-line tool and is known for its robustness and versatility.
opencv4nodejs is a Node.js binding for OpenCV, a popular computer vision library. It provides extensive image processing capabilities, including thresholding, and is suitable for more advanced image analysis tasks.
Changelog
v0.14.0 (Mon Jun 29 2020)
@jimp/core, jimp
Readme
Lightens an image.
This is useful as a simplified method for processing scanned drawings, signatures, etc
import jimp from 'jimp';
async function main() {
const image = await jimp.read('test/image.png');
image.threshold({ max: 150 });
// or
image.threshold({ max: 200, replace: 200, autoGreyscale: false });
}
main();
FAQs
Lightens an image.
The npm package @jimp/plugin-threshold receives a total of 985,177 weekly downloads. As such, @jimp/plugin-threshold popularity was classified as popular.
We found that @jimp/plugin-threshold demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 2 open source maintainers collaborating on the project.
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